From d62e56f4df9594f72ce501f5e19c974fd18e7295 Mon Sep 17 00:00:00 2001
From: Thomas Grill <xovo@users.sourceforge.net>
Date: Tue, 22 Oct 2002 23:07:10 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r186, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/; revision=187
---
 externals/grill/flext/tutorial/thread2/main.cpp | 132 ++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 externals/grill/flext/tutorial/thread2/main.cpp

(limited to 'externals/grill/flext/tutorial/thread2/main.cpp')

diff --git a/externals/grill/flext/tutorial/thread2/main.cpp b/externals/grill/flext/tutorial/thread2/main.cpp
new file mode 100644
index 00000000..ce2a170e
--- /dev/null
+++ b/externals/grill/flext/tutorial/thread2/main.cpp
@@ -0,0 +1,132 @@
+/* 
+flext tutorial - threads 2 
+
+Copyright (c) 2002 Thomas Grill (xovo@gmx.net)
+For information on usage and redistribution, and for a DISCLAIMER OF ALL
+WARRANTIES, see the file, "license.txt," in this distribution.  
+
+-------------------------------------------------------------------------
+
+This shows an example of multiple threads and syncing with a thread conditional
+*/
+
+// define FLEXT_THREADS for thread usage. Flext must also have been compiled with that defined!
+#ifndef FLEXT_THREADS
+#define FLEXT_THREADS
+#endif
+
+#include <flext.h>
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 301)
+#error You need at least flext version 0.3.1
+#endif
+
+
+class thread2:
+	public flext_base
+{
+	FLEXT_HEADER(thread2,flext_base)
+ 
+public:
+	thread2(int del); 
+
+protected:
+	void m_start(int st);
+	void m_stop();
+	void m_text();
+
+	void m_textout();
+
+private:
+	FLEXT_THREAD_I(m_start); // define threaded callback for method m_start
+	FLEXT_CALLBACK(m_stop);  // normal callback for m_stop
+	FLEXT_CALLBACK(m_text);  // turn on console output
+
+	FLEXT_THREAD(m_textout); // text output
+
+	float delay;
+	volatile int count;
+
+	// caution: CodeWarrior seems to ignore volatile modifier!!
+	volatile bool stopit,running,blipping;  // flags for running and stopping
+
+	// thread conditional for stop signal
+	ThrCond cond;
+};
+
+FLEXT_NEW_1("thread2",thread2,int)
+
+
+
+thread2::thread2(int del):
+	delay(del/1000.f),
+	stopit(false),
+	running(false),blipping(false)
+{ 
+	AddInAnything();  
+	AddOutInt(2); 
+	SetupInOut();  // set up inlets and outlets
+
+	FLEXT_ADDMETHOD(0,m_start); // register start for integer numbers (floats in PD)
+	FLEXT_ADDMETHOD_(0,"text",m_text); // register m_text method for "text" tag
+	FLEXT_ADDMETHOD_(0,"stop",m_stop); // register m_text method for "stop" tag
+} 
+
+void thread2::m_start(int st)
+{
+	// if already running, just set back the counter
+	if(running) { count = st; return; }
+
+	running = true;
+
+	// loop until either the system exit flag or the "stopit" flag is set 
+	for(count = st; !ShouldExit() && !stopit; ++count) 
+	{
+		Sleep(delay);
+		ToOutInt(0,count); // output loop count
+	}
+
+	cond.Lock(); // lock conditional
+	running = false; // change state flag
+	cond.Signal(); // signal changed flag to watiting "stop" method
+	cond.Unlock(); // unlock conditional
+}
+
+void thread2::m_stop()
+{
+	cond.Lock(); // lock conditional
+	stopit = true; // set termination flag
+
+	while(*(&running) || *(&blipping)) // workaround for CodeWarrior!
+	{
+		cond.Wait(); // wait for signal by running threads
+	}
+
+	// --- Here, the threads should have stopped ---
+
+	stopit = false; // reset flag
+	cond.Unlock(); // unlock conditional
+}
+
+
+void thread2::m_text()
+{
+	FLEXT_CALLMETHOD(m_textout);
+}
+
+void thread2::m_textout()
+{
+	if(blipping) return;
+	blipping = true;
+
+	while(!ShouldExit() && !stopit) {
+		post("%i",count);
+		Sleep(1.f);
+	}
+
+	cond.Lock(); // lock conditional
+	blipping = false; // change state flag
+	cond.Signal(); // signal changed flag to watiting "stop" method
+	cond.Unlock(); // unlock conditional
+}
+
-- 
cgit v1.2.1